1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "ecmascript/js_api/js_api_lightweightmap_iterator.h"
17
18 #include "ecmascript/base/typed_array_helper-inl.h"
19 #include "ecmascript/containers/containers_errors.h"
20 #include "ecmascript/global_env.h"
21 #include "ecmascript/js_api/js_api_lightweightmap.h"
22 #include "ecmascript/js_array.h"
23
24 namespace panda::ecmascript {
25 using BuiltinsBase = base::BuiltinsBase;
26 using ContainerError = containers::ContainerError;
27 using ErrorFlag = containers::ErrorFlag;
Next(EcmaRuntimeCallInfo * argv)28 JSTaggedValue JSAPILightWeightMapIterator::Next(EcmaRuntimeCallInfo *argv)
29 {
30 ASSERT(argv != nullptr);
31 JSThread *thread = argv->GetThread();
32 [[maybe_unused]] EcmaHandleScope handleScope(thread);
33 JSHandle<JSTaggedValue> input(BuiltinsBase::GetThis(argv));
34 if (!input->IsJSAPILightWeightMapIterator()) {
35 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
36 "The Symbol.iterator method cannot be bound");
37 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error, JSTaggedValue::Exception());
38 }
39 JSHandle<JSAPILightWeightMapIterator> iter(input);
40 JSHandle<JSTaggedValue> oldlightWeightMap(thread, iter->GetIteratedLightWeightMap(thread));
41 JSHandle<JSAPILightWeightMap> lightWeightMap(oldlightWeightMap);
42 IterationKind itemKind = IterationKind(iter->GetIterationKind());
43 if (oldlightWeightMap->IsUndefined()) {
44 JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
45 return env->GetUndefinedIteratorResult().GetTaggedValue();
46 }
47 int32_t index = iter->GetNextIndex();
48 int32_t length = static_cast<int32_t>(lightWeightMap->GetSize());
49 if (index >= length) {
50 JSHandle<JSTaggedValue> undefinedHandle = thread->GlobalConstants()->GetHandledUndefined();
51 iter->SetIteratedLightWeightMap(thread, undefinedHandle);
52 JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
53 return env->GetUndefinedIteratorResult().GetTaggedValue();
54 }
55 iter->SetNextIndex(index + 1);
56
57 JSHandle<JSTaggedValue> key(thread, lightWeightMap->GetKeyAt(thread, lightWeightMap, index));
58 if (itemKind == IterationKind::KEY) {
59 return JSIterator::CreateIterResultObject(thread, key, false).GetTaggedValue();
60 }
61 JSHandle<JSTaggedValue> value(thread, lightWeightMap->Get(thread, lightWeightMap, key));
62 if (itemKind == IterationKind::VALUE) {
63 return JSIterator::CreateIterResultObject(thread, value, false).GetTaggedValue();
64 }
65 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
66 JSHandle<TaggedArray> array = factory->NewTaggedArray(2); // 2 means the length of array
67 array->Set(thread, 0, key);
68 array->Set(thread, 1, value);
69 JSHandle<JSTaggedValue> keyAndValue(JSArray::CreateArrayFromList(thread, array));
70
71 return JSIterator::CreateIterResultObject(thread, keyAndValue, false).GetTaggedValue();
72 }
73
CreateLightWeightMapIterator(JSThread * thread,JSHandle<JSTaggedValue> & obj,IterationKind kind)74 JSHandle<JSTaggedValue> JSAPILightWeightMapIterator::CreateLightWeightMapIterator(JSThread *thread,
75 JSHandle<JSTaggedValue> &obj,
76 IterationKind kind)
77 {
78 ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
79 if (!obj->IsJSAPILightWeightMap()) {
80 if (obj->IsJSProxy() && JSHandle<JSProxy>::Cast(obj)->GetTarget(thread).IsJSAPILightWeightMap()) {
81 obj = JSHandle<JSTaggedValue>(thread, JSHandle<JSProxy>::Cast(obj)->GetTarget(thread));
82 } else {
83 JSTaggedValue error = ContainerError::BusinessError(thread, ErrorFlag::BIND_ERROR,
84 "The Symbol.iterator method cannot be bound");
85 THROW_NEW_ERROR_AND_RETURN_VALUE(thread, error,
86 JSHandle<JSTaggedValue>(thread, JSTaggedValue::Exception()));
87 }
88 }
89 JSHandle<JSTaggedValue> iter(factory->NewJSAPILightWeightMapIterator(JSHandle<JSAPILightWeightMap>(obj), kind));
90 return iter;
91 }
92 } // namespace panda::ecmascript
93